EP0033076A3 - Character recognition method and apparatus - Google Patents

Character recognition method and apparatus Download PDF

Info

Publication number
EP0033076A3
EP0033076A3 EP81100155A EP81100155A EP0033076A3 EP 0033076 A3 EP0033076 A3 EP 0033076A3 EP 81100155 A EP81100155 A EP 81100155A EP 81100155 A EP81100155 A EP 81100155A EP 0033076 A3 EP0033076 A3 EP 0033076A3
Authority
EP
European Patent Office
Prior art keywords
character recognition
recognition method
character
recognition
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP81100155A
Other versions
EP0033076A2 (en
EP0033076B1 (en
Inventor
Warner C. Scott
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Texas Instruments Inc
Original Assignee
Texas Instruments Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Texas Instruments Inc filed Critical Texas Instruments Inc
Publication of EP0033076A2 publication Critical patent/EP0033076A2/en
Publication of EP0033076A3 publication Critical patent/EP0033076A3/en
Application granted granted Critical
Publication of EP0033076B1 publication Critical patent/EP0033076B1/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V10/00—Arrangements for image or video recognition or understanding
    • G06V10/20—Image preprocessing
    • G06V10/24—Aligning, centring, orientation detection or correction of the image
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V10/00—Arrangements for image or video recognition or understanding
    • G06V10/20—Image preprocessing
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V10/00—Arrangements for image or video recognition or understanding
    • G06V10/20—Image preprocessing
    • G06V10/30—Noise filtering
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V10/00—Arrangements for image or video recognition or understanding
    • G06V10/20—Image preprocessing
    • G06V10/34—Smoothing or thinning of the pattern; Morphological operations; Skeletonisation
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V10/00—Arrangements for image or video recognition or understanding
    • G06V10/40—Extraction of image or video features
EP81100155A 1980-01-28 1981-01-12 Character recognition method and apparatus Expired EP0033076B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US06/115,986 US4415880A (en) 1980-01-28 1980-01-28 Character recognition method and apparatus
US115986 1980-01-28

Publications (3)

Publication Number Publication Date
EP0033076A2 EP0033076A2 (en) 1981-08-05
EP0033076A3 true EP0033076A3 (en) 1984-07-18
EP0033076B1 EP0033076B1 (en) 1987-09-09

Family

ID=22364573

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81100155A Expired EP0033076B1 (en) 1980-01-28 1981-01-12 Character recognition method and apparatus

Country Status (4)

Country Link
US (1) US4415880A (en)
EP (1) EP0033076B1 (en)
JP (1) JPS56155477A (en)
DE (1) DE3176432D1 (en)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4773098A (en) * 1980-05-27 1988-09-20 Texas Instruments Incorporated Method of optical character recognition
EP0040682B1 (en) * 1980-05-27 1987-03-25 Texas Instruments Incorporated Didactic device such as doll having simulated sight and voice
US4864628A (en) * 1983-08-26 1989-09-05 Texas Instruments Incorporated Method of optical character recognition
JPS6085691A (en) * 1983-10-17 1985-05-15 Fanuc Ltd Digital picture signal processor
US4680805A (en) * 1983-11-17 1987-07-14 Texas Instruments Incorporated Method and apparatus for recognition of discontinuous text
FR2579795B1 (en) * 1985-03-29 1987-05-07 Romeo Francoise MACHINE FOR INPUT, PROCESSING AND COMPRESSION OF DOCUMENTS
JP2638774B2 (en) * 1986-01-08 1997-08-06 ソニー株式会社 TV receiver
JPH07120389B2 (en) * 1986-02-28 1995-12-20 住友電気工業株式会社 Optical character reader
US5097517A (en) * 1987-03-17 1992-03-17 Holt Arthur W Method and apparatus for processing bank checks, drafts and like financial documents
US4837842A (en) * 1986-09-19 1989-06-06 Holt Arthur W Character and pattern recognition machine and method
US5042076A (en) * 1988-12-02 1991-08-20 Electrocom Automation, Inc. Programmable optical character recognition
GB2212961A (en) * 1987-11-23 1989-08-02 Gen Electric Co Plc Target recognition
WO1992006443A1 (en) * 1990-09-27 1992-04-16 Cgk Computer Gesellschaft Konstanz Mbh Circuit for processing pixel data in automatic character recognition
US5051816A (en) * 1990-10-29 1991-09-24 At&T Bell Laboratories Pixel generator test set
US5307424A (en) * 1990-12-12 1994-04-26 Eberhard Kuehl Character recognition system
US5428692A (en) * 1991-11-18 1995-06-27 Kuehl; Eberhard Character recognition system
US5131054A (en) * 1991-01-09 1992-07-14 Thinking Machines Corporation Character recognition system using massively parallel computer that identifies a query character using degree of similarity with plurality of training characters of known identity
US5272766A (en) * 1991-01-14 1993-12-21 Ncr Corporation OCR system for recognizing user-specified custom fonts in addition to standard fonts using three-layer templates
JPH05189617A (en) * 1991-04-15 1993-07-30 Microsoft Corp Method and apparatus for arc segmentation in handwritten-character recognition
US7711191B2 (en) * 2006-12-21 2010-05-04 Michael John Kosek Electronic transaction processing server with automated transaction evaluation
US11260351B2 (en) 2020-02-14 2022-03-01 Saudi Arabian Oil Company Thin film composite hollow fiber membranes fabrication systems

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL6909997A (en) * 1969-06-30 1971-01-04
US3795894A (en) * 1968-11-28 1974-03-05 A Klemt Method and apparatus for comparison
GB1384141A (en) * 1971-06-15 1975-02-19 Perennou G Character encoding device
US3999161A (en) * 1973-07-30 1976-12-21 De Staat Der Nederlanden, Te Dezen Vertegenwoordigd Door De Directeur-Generaal Der Posterijen, Telegrafie En Telefonie Method and device for the recognition of characters, preferably of figures

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3781799A (en) * 1972-01-03 1973-12-25 Ibm Control system employing microprogram discrete logic control routines
JPS5539025B2 (en) * 1973-07-09 1980-10-08
JPS5313840A (en) * 1976-07-23 1978-02-07 Hitachi Ltd Analogy calculator
JPS5832434B2 (en) * 1976-11-15 1983-07-13 富士通株式会社 recognition device
US4130819A (en) * 1977-06-22 1978-12-19 Hildegarde Seifried Optical character recognition device
US4120049A (en) * 1977-06-24 1978-10-10 Scan-Optics, Inc. Line memory
US4122443A (en) * 1977-06-24 1978-10-24 Scan Optics, Inc. Character position detector
JPS5822779B2 (en) * 1977-08-23 1983-05-11 日本電信電話株式会社 Character pattern classification method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3795894A (en) * 1968-11-28 1974-03-05 A Klemt Method and apparatus for comparison
NL6909997A (en) * 1969-06-30 1971-01-04
GB1384141A (en) * 1971-06-15 1975-02-19 Perennou G Character encoding device
US3999161A (en) * 1973-07-30 1976-12-21 De Staat Der Nederlanden, Te Dezen Vertegenwoordigd Door De Directeur-Generaal Der Posterijen, Telegrafie En Telefonie Method and device for the recognition of characters, preferably of figures

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
IEEE TRANSACTIONS ON ELECTRONIC COMPUTERS, vol. EC-14, no. 3, June 1965, pages 434-443, New York (USA); *

Also Published As

Publication number Publication date
JPH0353672B2 (en) 1991-08-15
US4415880A (en) 1983-11-15
JPS56155477A (en) 1981-12-01
DE3176432D1 (en) 1987-10-15
EP0033076A2 (en) 1981-08-05
EP0033076B1 (en) 1987-09-09

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